(180 % of ?) ÷ 2= 504 (a) 400 (b) 480 (c) 600 (d) 560
(180 % of ?) ÷ 2= 504 (180100×x)÷2=504⇒180100 x = 504 × 2x = 504×2×100180=560
The value of ∠A + ∠B + ∠C + ∠D + ∠E + ∠F is: